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  <title>Description of calculate_snr</title>
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<div><a href="../../index.html">Home</a> &gt;  <a href="../index.html">CO4OI</a> &gt; <a href="index.html">misc</a> &gt; calculate_snr.m</div>

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<h1>calculate_snr
</h1>

<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>calculate_snr computes the SNR between x (original image) and w (reconstruction)</strong></div>

<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="box"><strong>function snr = calculate_snr( x,w ) </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre class="comment"> calculate_snr computes the SNR between x (original image) and w (reconstruction)</pre></div>

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<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
This function calls:
<ul style="list-style-image:url(../../matlabicon.gif)">
</ul>
This function is called by:
<ul style="list-style-image:url(../../matlabicon.gif)">
</ul>
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<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../../up.png"></a></h2>
<div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function snr = calculate_snr( x,w )</a>
0002 
0003 <span class="comment">% calculate_snr computes the SNR between x (original image) and w (reconstruction)</span>
0004 
0005 snr=20*log(norm(x,<span class="string">'fro'</span>)/norm(x-w, <span class="string">'fro'</span>));
0006 
0007 <span class="keyword">end</span>
0008</pre></div>
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